The Omega Speedmaster 3210.51 is a dynamic stainless steel chronograph featuring a black dial with tri-compax subdials, tachymeter bezel, and automatic movement—designed for precision, performance, and iconic style. Brand: Omega Model: Speedmaster Reference: 3210.51 Serial No.: 85705936 Condition: Excellent Condition Details:  Excellent overall condition with almost no visible signs of use. Barely noticeable hairline marks may be present, but they are not visible to the naked eye. Please see photos for details. Dial Colour: Black Case Material: Steel  Strap Colour: Silver Strap material: Steel  Movement: Automatic  Face Diameter: 39 mm   Approx. max circumference: 19.5 cm Comes With: Box, certificate, brand booklet, Service card, extra links